Experimental proof of a load resilient external matching solution for the ITER ICRH system

被引：0

作者：

Vervier, M ^{[1
]}

Messiaen, A ^{[1
]}

Dumortier, P ^{[1
]}

Lamalle, P ^{[1
]}

机构：

[1] EURATOM Belgian State Sooc, LPP, ERM, KMS,Trilateral Euregio Cluster, B-1000 Brussels, Belgium

来源：

Radio Frequency Power in Plasmas | 2005年 / 787卷

关键词：

ICRE; ITER; conjugate T; hybrid; matching;

D O I：

暂无

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

A reliable load resilient external matching scheme for the ITER ICRH system has been successfully tested on the mock-up of the external matching system with variable plasma load simulation. To avoid the deleterious mutual coupling effects the power has been passively distributed among the upper half and the bottom half of the 24 radiating straps of the antenna plug. In this plug the straps are grouped in 8 triplets by 4-ports junctions. The 4 top and 4 bottom triplets are respectively put in parallel outside the antenna plug near a voltage anti-node by means of T junctions. The load resilient matching is then obtained by a 4 parameters single "conjugate T" (CT) configuration. For an antenna loading variation of about I to 8 Omega/m the VSWR at the power source remains below 1.3. The maximum voltage along the line remains equal to the one in the antenna plug and there is a fair power share between the straps. A pi 0 pi 0 toroidal phasing is easily obtained. The poloidal phasing between the top and bottom triplets is determined by the loading. A straightforward matching procedure is described. Good load resilience is also obtained by replacing the CT by one hybrid.

引用

页码：202 / 205

页数：4